The definition of advertisement is the means of communication in which a product, brand or service is promoted to a viewership in order to attract interest, engagement, and sales. Advertisements (often shortened to ads or adverts) come in many forms, from copy to interactive video, and have evolved to become a crucial feature of the app marketplace.
Advertisements are a guaranteed method of reaching an audience. By creating an engaging ad, and spending enough to reach your target users, advertisements can have an immediate impact on business. This effect could be seen in improved trade or boosted brand recognition, among many different metrics. An advertising strategy typically includes a KPI to measure this impact.